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Trapped Ion Quantum Computing Superconducting Qubits

Signatures of Gaussian superconducting fluctuations in nonlocal noise magnetometry

arXiv
Authors: Dror Orgad

Year

2026

Paper ID

63772

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

0

Abstract

We calculate the two-point magnetic noise spectrum arising from Gaussian superconducting fluctuations, a quantity directly measurable by spin qubit pairs such as nitrogen vacancy centers in diamond. The analysis utilizes the time-dependent Ginzburg-Landau theory, reflecting the direct contribution of fluctuating Cooper pairs to the current correlations and consequent magnetic noise. We treat both two-dimensional systems and wires, considering them in equilibrium and under a uniform electric field. The signal is expected to be strongest in high-temperature superconductors, and we contrast our findings with the predicted signatures of a vortex liquid to offer an additional route to elucidate the nature of fluctuations in these systems.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • We calculate the two-point magnetic noise spectrum arising from Gaussian superconducting fluctuations, a quantity directly measurable by spin qubit pairs such as nitrogen...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2605.18970 [2] arXiv https://arxiv.org/abs/2605.18970 [3] Publisher https://arxiv.org/abs/2605.18970

Local Citation Graph (Related-Paper Links)

Current Paper #63772 #68985 Floquet Entanglement Generation... #69039 SAT, MaxSAT, and SMT for QLDPC ... #69038 Physically Constrained Ensemble... #69031 Amplitude-dependent quantum hyd...

External citation index: OpenAlex citation signal • updated 2026-06-15 00:29:01

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